Outline

Outline at a glance

Outline is a popular open-source team knowledge base and wiki with a polished editor and real-time collaboration, a self-hostable alternative to hosted documentation tools. Outline ships regular releases plus security fixes; as a web application holding organizational knowledge and user accounts, hardening and timely updates matter.

For admins updates run by swapping the application/container and may include database migrations — back up the PostgreSQL database and file storage first, and read the release notes. Keep Outline off the open internet behind authentication (it integrates with SSO providers) and TLS, since documentation often holds sensitive detail. The underlying Node.js, database and storage (S3-compatible) should stay supported and secured. After upgrading, verify login, documents and any integrations. It relies on an identity provider for auth — keep that configured and current. Track the version and its releases; patchletter surfaces new Outline versions so security fixes aren't missed.